platform: jvm
3641 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| springdoc/springdoc-openapi springdoc-openapi is a Java library that automatically generates OpenAPI 3 API documentation for Spring Boot applications, with built-in Sw… | 97 | 3737 | stable |
| Mojang/brigadier Brigadier is a command parser and dispatcher library developed by Mojang for Minecraft: Java Edition, available under the MIT license. It l… | 65 | 3723 | stable |
| schemaspy/schemaspy SchemaSpy is a Java-based database metadata analyzer that generates HTML documentation of relational database schemas, including entity-rel… | 57 | 3710 | active |
| grpc-ecosystem/grpc-spring A Spring Boot starter that integrates the gRPC framework into Spring applications, auto-configuring gRPC servers for @GrpcService beans and… | 66 | 3708 | active |
| reactor/reactor The Reactor Bill of Materials (BOM) is a curated set of compatible versions for Project Reactor modules such as reactor-core, reactor-netty… | 99 | 3693 | stable |
| niumoo/bing-wallpaper A Java-based project that automatically fetches Bing's daily 4K wallpaper and archives it with a browsable web gallery and API. It publishe… | 77 | 3685 | active |
| openrewrite/rewrite OpenRewrite is an open-source automated refactoring ecosystem that parses source code into Lossless Semantic Trees and applies prepackaged … | 95 | 3673 | active |
| networknt/light-4j Light-4J is a fast, lightweight, cloud-native microservices framework for Java built on the Undertow HTTP core. It offers a small memory fo… | 94 | 3671 | active |
| mikel/mail Mail is a pure Ruby library for generating, parsing, and sending/receiving email messages in a simple, Ruby-esque way. It proxies network a… | 81 | 3671 | stable |
| fabric8io/kubernetes-client A Java client library providing access to the full Kubernetes and OpenShift REST APIs via a fluent DSL. It includes extensions for Knative,… | 96 | 3669 | active |
| guolindev/PermissionX PermissionX is an open-source Android library written in Kotlin that simplifies requesting and handling Android runtime permissions. It sup… | 32 | 3658 | stable |
| SimpleMobileTools/Simple-Calendar Simple Calendar is a free, open-source, offline-first calendar app for Android with events, tasks, reminders, customizable colors, and home… | 23 | 3650 | stable |
| awslabs/deequ Deequ is a Scala library built on Apache Spark for defining 'unit tests for data' that measure data quality in large datasets. It computes … | 93 | 3643 | active |
| huburt-Hu/NewbieGuide An Android library for quickly adding newbie onboarding guide overlays with highlight effects via concise chained calls. It automatically t… | 23 | 3640 | stable |
| Guardsquare/proguard ProGuard is a free shrinker, optimizer, obfuscator, and preverifier for Java bytecode. It removes unused code, optimizes bytecode, and rena… | 95 | 3638 | active |
| spockframework/spock Spock is a testing and specification framework for JVM developers that combines BDD-style readable specifications with powerful built-in mo… | 74 | 3631 | active |
| anggrayudi/android-hidden-api A library and tooling project that provides access to Android hidden APIs (com.android.internal and @hide members) via a custom android.jar… | 64 | 3623 | active |
| dtinit/data-transfer-project An open-source framework providing common data models and adapter libraries that enable direct service-to-service transfer of user data bet… | 67 | 3619 | active |
| googlemaps/android-maps-utils An open-source Kotlin utility library extending the Google Maps SDK for Android with features like marker clustering, heatmaps, KML/GeoJSON… | 98 | 3616 | stable |
| AxonIQ/AxonFramework Axon Framework is a JVM framework for building evolutionary, message-driven microservices based on Domain-Driven Design, CQRS, and Event So… | 99 | 3614 | stable |
| apache/logging-log4j2 Apache Log4j 2 is an industrial-grade Java logging framework consisting of a feature-rich logging API (Log4j API) and a high-performance im… | 92 | 3614 | stable |
| Athou/commafeed CommaFeed is a self-hosted RSS feed reader inspired by Google Reader, built with Quarkus (Java) and React/TypeScript. It supports thousands… | 99 | 3604 | active |
| tommybuonomo/dotsindicator An Android library that renders animated dots indicators for ViewPagers and Jetpack Compose pagers. It supports four indicator styles (Shif… | 76 | 3602 | stable |
| Netflix/concurrency-limits A Java library that applies TCP congestion control concepts to automatically detect and enforce concurrency limits for services. It uses la… | 58 | 3598 | active |
| gurecn/YuyanIme YuyanIme is a Chinese input method app for Android built on the Rime engine, supporting full pinyin, T9 nine-key, double pinyin, handwritin… | 82 | 3589 | active |
| unicode-org/icu ICU (International Components for Unicode) is the Unicode Consortium's mature C/C++ and Java library providing Unicode and globalization su… | 82 | 3586 | stable |
| java-decompiler/jd-gui JD-GUI is a standalone graphical Java decompiler that displays Java source code reconstructed from .class files. It lets users browse decom… | 23 | 15180 | maintenance |
| oxylabs/google-ai-mode-scraper A code repository of examples for Oxylabs' Google AI Mode Scraper, a commercial API that sends prompts to Google AI Mode and returns parsed… | 61 | 3581 | active |
| PlexPt/chatgpt-java An unofficial Java SDK that wraps OpenAI's ChatGPT API for GPT-3.5, GPT-4, GPT-4o, and GPT-5 models, published on Maven Central with a flue… | 46 | 3579 | active |
| hegaojian/JetpackMvvm JetpackMvvm is an Android MVVM rapid development framework built on Jetpack architecture components (ViewModel, LiveData, Kotlin Flow, Repo… | 64 | 3571 | active |
| immutables/immutables A Java annotation processor that generates immutable value classes, builders, and copy-with methods from interfaces, abstract classes, and … | 92 | 3570 | active |
| Netflix/atlas Atlas is Netflix's in-memory dimensional time series database, serving as a backend for storing and querying operational metrics at scale. … | 90 | 3564 | active |
| LinShunKang/MyPerf4J MyPerf4J is a high-performance Java application performance monitoring (APM) tool implemented as a non-intrusive JavaAgent using ASM byteco… | 72 | 3559 | active |
| icedland/iced iced is a fast and correct x86/x64 (16/32/64-bit) instruction decoder, disassembler, and assembler library with bindings for Rust, .NET, Ja… | 67 | 3556 | active |
| apache/lucene Apache Lucene is a high-performance, full-featured text search engine library written in Java, providing indexing, search, spellchecking, h… | 94 | 3550 | stable |
| JetBrains/kotlinconf-app The official KotlinConf conference application by JetBrains, built with Kotlin Multiplatform and Compose Multiplatform to share UI code acr… | 76 | 3546 | active |
| dariuszseweryn/RxAndroidBle RxAndroidBle is an Android Bluetooth Low Energy library that wraps Android's BLE APIs into RxJava reactive observables. It handles asynchro… | 34 | 3542 | active |
| bastillion-io/Bastillion Bastillion is a self-hosted, web-based SSH console and SSH key management platform that acts like a bastion host with a dashboard. It provi… | 99 | 3541 | active |
| eclipse-openj9/openj9 Eclipse OpenJ9 is an independent, enterprise-grade Java Virtual Machine implementation for OpenJDK, built on Eclipse OMR. It is optimized f… | 94 | 3537 | active |
| johncarl81/parceler Parceler is a Java annotation processor that generates Android Parcelable boilerplate code for POJOs annotated with @Parcel. It eliminates … | 73 | 3528 | stable |
| bethington/ghidra-mcp A Model Context Protocol (MCP) server and Ghidra plugin exposing 250+ tools that let AI agents drive Ghidra's reverse engineering capabilit… | 83 | 3508 | active |
| mirai mirai is a high-efficiency open-source library implementing the QQ Android protocol for building QQ chatbots on the JVM. It includes mirai-… | 23 | 14806 | maintenance |
| getActivity/Toaster Toaster is an Android toast framework written in Java that fixes common Toast problems such as display failures on Android 11+ and backgrou… | 77 | 3506 | active |
| unitycatalog/unitycatalog Unity Catalog is an open-source, multimodal data and AI catalog that provides a unified metadata and governance layer for tables, files, fu… | 86 | 3501 | active |
| EngineHub/WorldEdit WorldEdit is an in-game Minecraft map editor available as a mod or server plugin, offering selections, schematics, copy/paste, brushes, and… | 76 | 3499 | active |
| aeron-io/simple-binary-encoding Simple Binary Encoding (SBE) is a high-performance binary message codec implementing the FIX SBE standard for low-latency applications, wit… | 99 | 3495 | stable |
| brahmkshatriya/echo Echo is an extension-based music player for Android with a clean, intuitive UI that hosts no content itself and works offline by default. A… | 71 | 3484 | active |
| wushuo894/ani-rss ANI-RSS is a self-hosted Java application that automates anime tracking via RSS feeds: it subscribes to shows, downloads torrents through q… | 86 | 3480 | active |
| google/ksp Kotlin Symbol Processing (KSP) is an API from Google for developing lightweight Kotlin compiler plugins, primarily used for annotation proc… | 98 | 3475 | active |
| nextflow-io/nextflow Nextflow is an open-source DSL and runtime for building scalable, portable, and reproducible data-driven computational pipelines, based on … | 97 | 3475 | stable |
| scala/scala The Scala 2 programming language compiler and standard library, hosted by the Scala organization. Scala 2 is in maintenance mode, with acti… | 81 | 14570 | maintenance |
| collectiveidea/interactor A Ruby gem providing a common interface for encapsulating business logic in single-purpose objects called interactors. Each interactor oper… | 46 | 3458 | stable |
| apache/maven-mvnd Apache Maven Daemon (mvnd) is a drop-in replacement for the Maven build tool that runs builds in a long-lived background daemon process. It… | 90 | 3456 | active |
| Kyant0/AndroidLiquidGlass A Compose Multiplatform library that renders a customizable Liquid Glass effect by drawing a copy of the background (backdrop) into the for… | 85 | 3456 | active |
| joernio/joern Joern is an open-source code analysis platform that generates code property graphs (CPGs) from source code, bytecode, and binaries for C/C+… | 95 | 3453 | active |
| alibaba/ARouter ARouter is an Android routing framework from Alibaba that helps decouple navigation between pages and modules in componentized apps. It sup… | 23 | 14459 | maintenance |
| Grt1228/chatgpt-java An unofficial Java SDK for the OpenAI API covering all official endpoints including chat completions (GPT-3.5/GPT-4), DALL-E image generati… | 21 | 3423 | active |
| google/volley Volley is Google's HTTP networking library for Android that simplifies and speeds up network requests in mobile apps. It provides automatic… | 85 | 3420 | stable |
| Red5/red5-server Red5 is an open source media server written in Java for live streaming and video-on-demand (VOD), with a plugin architecture for customizat… | 97 | 3418 | active |
| MobileNativeFoundation/Store Store5 is a Kotlin Multiplatform library that provides a unified architecture for fetching, caching, and updating data across network, memo… | 89 | 3416 | active |
| Tencent-TDS/KuiklyUI KuiklyUI is a Kotlin Multiplatform UI framework from Tencent TDS that lets developers build apps with one codebase targeting Android, iOS, … | 86 | 3413 | active |
| apache/linkis Apache Linkis is a computation middleware layer that sits between upper-layer applications and underlying big data engines such as Spark, H… | 71 | 3406 | stable |
| milessabin/shapeless shapeless is a type class and dependent type based generic programming library for Scala. It enables deriving type class instances automati… | 67 | 3402 | stable |
| amitshekhariitbhu/PRDownloader PRDownloader is an Android file downloader library written in Java that supports pause and resume of downloads, including resume after app … | 52 | 3391 | stable |
| raamcosta/compose-destinations Compose Destinations is a KSP annotation-processing library that generates type-safe navigation code on top of the official Jetpack Compose… | 54 | 3388 | active |
| Netflix/dgs-framework DGS Framework (Domain Graph Service) is a GraphQL server framework for Spring Boot, developed and maintained by Netflix. It provides an ann… | 95 | 3385 | active |
| DanielMartinus/Konfetti Konfetti is a lightweight Kotlin library for rendering confetti particle animations on Android, supporting both Jetpack Compose and XML-bas… | 40 | 3385 | active |
| apache/paimon Apache Paimon is a lakehouse table format that combines lake format with LSM tree structure to support real-time streaming updates. It enab… | 87 | 3384 | active |
| jenly1314/ZXingLite ZXingLite is a streamlined, fast Android library built on ZXing for scanning and generating QR codes and barcodes, with fully customizable … | 82 | 3367 | active |
| AnySoftKeyboard/AnySoftKeyboard AnySoftKeyboard is a free, open-source on-screen keyboard application for Android supporting 50+ languages via external language packs. It … | 80 | 3367 | active |
| google/differential-privacy Google's collection of differential privacy libraries for computing ε- and (ε, δ)-differentially private statistics over datasets. It inclu… | 78 | 3346 | active |
| uber/AutoDispose AutoDispose is an RxJava 2+ library from Uber that automatically binds the execution of RxJava streams to a provided scope via disposal/can… | 60 | 3344 | stable |
| elvishew/xLog XLog is a lightweight, powerful, and flexible logging library for Android and Java. It supports printing logs to Logcat, console, and files… | 23 | 3340 | stable |
| kosi-libs/Kodein Kodein is a painless Kotlin dependency injection container with a simple declarative DSL. It supports all Kotlin Multiplatform targets and … | 91 | 3335 | active |
| sqshq/piggymetrics PiggyMetrics is a personal financial advisor application built as a reference implementation of the microservice architecture pattern using… | 23 | 13949 | maintenance |
| prometheus/jmx_exporter The Prometheus JMX Exporter collects Java Management Extensions (JMX) MBean values and exposes them as Prometheus metrics, or forwards them… | 87 | 3320 | active |
| synthetichealth/synthea Synthea is an open-source synthetic patient population simulator that generates realistic but not real patient health records. It models pa… | 90 | 3313 | active |
| orhanobut/logger A simple, pretty, and powerful logging library for Android that formats log output with borders, thread info, method traces, and pretty-pri… | 23 | 13840 | maintenance |
| internetarchive/heritrix3 Heritrix is the Internet Archive's open-source, extensible, web-scale, archival-quality web crawler written in Java. It crawls websites and… | 95 | 3305 | active |
| AdoptOpenJDK/jitwatch JITWatch is a log analyser and visualiser for the Java HotSpot JIT compiler, built with a JavaFX user interface. It lets developers inspect… | 55 | 3305 | active |
| apache/avro Apache Avro is a data serialization system providing rich data structures, a compact binary format, container files, and RPC support, with … | 88 | 3301 | stable |
| oxylabs/chatgpt-scraper Code examples and documentation for Oxylabs' ChatGPT Scraper, a commercial Web Scraper API endpoint that sends prompts to ChatGPT and retur… | 62 | 3301 | active |
| Tencent/spring-cloud-tencent Spring Cloud Tencent is a Spring Cloud-based service governance framework from Tencent that implements the standard Spring Cloud SPI and in… | 98 | 3293 | active |
| JessYanCoding/AndroidAutoSize AndroidAutoSize is a low-cost Android screen adaptation library based on the Toutiao density adaptation scheme. It automatically scales UI … | 23 | 13729 | maintenance |
| openjdk/jfx OpenJFX is the open source mainline development project for JavaFX, a next-generation client application platform for building rich desktop… | 77 | 3282 | active |
| PlayEdu/PlayEdu PlayEdu is a 100% open-source enterprise training system (LMS) built with Java/SpringBoot3 and React18, deployable privately via Docker. Th… | 74 | 3282 | active |
| apache/nutch Apache Nutch is a highly extensible and scalable open-source web crawler built on Apache Hadoop data structures. It supports batch crawling… | 77 | 3277 | stable |
| spring-projects/spring-data-jpa Spring Data JPA is part of the Spring Data family and simplifies building JPA-based data access layers by generating repository implementat… | 98 | 3269 | stable |
| jfinal/jfinal JFinal is a lightweight Java web + ORM framework combining MVC architecture with an ActiveRecord-style database layer and the Enjoy templat… | 77 | 3269 | stable |
| woheller69/FreeDroidWarn A Java library for Android apps that displays an alert dialog warning users that the app will stop working on certified Android devices due… | 78 | 3264 | active |
| oracle/visualvm VisualVM is an all-in-one visual troubleshooting and profiling tool for Java applications, integrating command-line JDK tools with lightwei… | 78 | 3262 | stable |
| WeBankFinTech/DataSphereStudio DataSphere Studio is a one-stop data application development and management portal from WeBank, built on the Linkis computing middleware. I… | 50 | 3262 | active |
| Minestom/Minestom Minestom is an open-source, lightweight Minecraft server implementation written from scratch in modern Java, with no legacy NMS code. It pr… | 99 | 3257 | active |
| tink-crypto/tink Tink is a multi-language, cross-platform open source cryptographic library from Google that provides secure, easy-to-use APIs for encryptio… | 10 | 13537 | maintenance |
| lakesoul-io/LakeSoul LakeSoul is a cloud-native, real-time lakehouse framework with a Rust-native core providing ACID table format, concurrent upserts, incremen… | 82 | 3247 | active |
| aeron-io/agrona Agrona is a Java library of high-performance data structures and utility methods, including primitive-specialized collections, lock-free qu… | 94 | 3241 | active |
| openid/AppAuth-Android AppAuth for Android is a client SDK for communicating with OAuth 2.0 and OpenID Connect providers from Android apps. It follows RFC 8252 be… | 65 | 3238 | active |
| qos-ch/logback Logback is a reliable, fast and flexible logging framework for Java, intended as the successor to log4j 1.x. It natively implements the SLF… | 99 | 3233 | stable |
| ohler55/oj Oj (Optimized JSON) is a fast JSON parser and object marshaller implemented as a C extension for Ruby. It serves as a drop-in replacement f… | 93 | 3225 | stable |
| truffleruby/truffleruby TruffleRuby is a high-performance implementation of the Ruby programming language built on GraalVM's Truffle framework. It aims for full MR… | 89 | 3220 | active |